SCR Triggering Circuit

SCR Triggering Circuit

Tags: SCR Triggering Circuit, Triggering circuit for single phase full converter, Triggering circuit for single phase Semi converter, Triggering circuit for Half controlled converter, Pulse for (0180) degree Control,,
Overall rating

To obtain the gate pulse for the single phase converters.

Apparatus required

  • SCR triggering circuit kit
  • Patch chords
  • Power chord
  • CRO

Circuit Diagram


CRO Settings

  • Time (X) Axis :5ms/div
  • Voltage (Y) Axis: 20V/div
  • Probe :1:10 CRO Probe is suitable one.

Initial Settings

  • Ensure the 15V Power Supply is in proper with Tester.
  • Ensure the CRO is working properly with probe checking and proper ground line axis.

Pulse for SCR

Experiment Steps

  • Connect the 15VAC to power jack and ensure the voltage is around 15V using test point.
  • Then connect the Ref AC Input from the power controller circuit.
  • The test points are listed below.
       - +15V - Indicates 15VDC.
       - TP - Indicates Comparison pulse.
       - TV - Indicates Control Voltage.
       - TR - Indicates Ramp Voltage.
       - TG - Indicates common Ground.
       - (G1,K1); (G2,K2); (G3,K3) & (G4,K4) - Indicates Pulse for Scr.
  • α Potentiometer is used for control voltage variation (i.e) firing angle variation.
  • Another potentiometer is used for Ramp control.

*If the connections are wrong the kit will get damage.
*These pulse can be used for

  • Single Phase Full Converter Circuit.
  • Single Phase Semi Converter Circuit.
  • Single Phase Half Controller Circuit.

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